美国疾病控制与预防中心(CDC)也对某些基因数据加以限制，这些数据是由全球不同地区分析得到的。
America's Centres for Disease Control (CDC) also restricts access to some of the genetic data that it has analysed from various parts of the world.
有源功率因数校正满足EMC的谐波电流的排放限制，以及满足电压波动和闪变的限制。
Active Power Factor Correction to meet EMC limits for harmonic current emissions, and limitations of voltage fluctuations and flicker.
人们的传递因数能介绍元素限制，如同一个特别的应用程序编译的资料可能是比较不有用于其他地方一样。
This human factor can introduce an element of constraint, as data compiled for a particular application may be less useful elsewhere.
在单位功率因数整流器中，利用瞬时值比较法来控制电源电流，不但控制简单，还可有效限制器件的最高开关频率。
The method of instantaneous value comparison for source current control of unity power factor rectifier possesses advantages of simplicity as well as valid restriction for maximum switching frequency.
所必需的基因数量也是一个主要的限制因素，因为当需一个单一且早已得到证明的基因时DNA非常有用。
The number of genes necessary is also a major limitation, since DNA is most useful when only a single, easily identifiable gene is needed.
所必需的基因数量也是一个主要的限制因素，因为当需一个单一且早已得到证明的基因时DNA非常有用。
The number of genes necessary is also a major limitation, since DNA is most useful when only a single, easily identifiable gene is needed.
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